AMD Radeon Sky 900 vs ATI Radeon HD 5870 Mac Edition

VS

AMD Radeon Sky 900 ATI Radeon HD 5870 Mac Edition

We compared two Desktop platform GPUs: 3GB VRAM Radeon Sky 900 and 1024MB VRAM Radeon HD 5870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 900 's Advantages

Released 2 years and 9 months late

Boost Clock950MHz

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (240.0GB/s vs 153.0GB/s)

192 additional rendering cores

ATI Radeon HD 5870 Mac Edition 's Advantages

Lower TDP (228W vs 300W)

Score

Benchmark

FP32 (float)

Radeon Sky 900 +25%

3.405 TFLOPS

Radeon HD 5870 Mac Edition

2.72 TFLOPS

Radeon Sky 900

VS

Radeon HD 5870 Mac Edition

Graphics Card

Mar 2013

Release Date

Jun 2010

Radeon Sky

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

825 MHz

Base Clock

-

950 MHz

Boost Clock

-

1250 MHz

Memory Clock

1195 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

240.0GB/s

Bandwidth

153.0GB/s

Render Config

-

SM Count

-

28

Compute Units

20

1792

Shading Units

1600

112

TMUs

80

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

512 KB

Theoretical Performance

30.40 GPixel/s

Pixel Rate

27.20 GPixel/s

106.4 GTexel/s

Texture Rate

68.00 GTexel/s

-

FP16 (half)

-

3.405 TFLOPS

FP32 (float)

2.720 TFLOPS

851.2 GFLOPS

FP64 (double)

544.0 GFLOPS

Graphics Processor

Tahiti

GPU Name

Cypress

Orthrus

GPU Variant

Cypress XT (215-0735033)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

2.154 billion

352 mm²

Die Size

334 mm²

Board Design

300W

TDP

228W

700 W

Suggested PSU

550 W

1x DVI 1x mini-DisplayPort 1.2

Outputs

1x DVI 2x mini-DisplayPort 1.1

2x 8-pin

Power Connectors

2x 6-pin

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

5.0

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